Условие:

5.30 а) (-2pq5/3ma2)2*9m2a2/4p3q7;

б) -50a4b5/63m9n8:(5a2b3/3m2n5)3;

в) (-2x3y4/5a2b)*(-25a4b3/24x8y13);

г) (-10p2q2/3a3)2:(-25p3q3/27a6).